242 National Highway Watershed to Enshi Grand Canyon Tunnel Damu to Zhujiapo?

Yes, the section from Fenshuiling to Enshi Grand Canyon Tunnel of National Highway 242 to Damu to Zhujiapo is one of the longest tunnels in China. Tunnel is an engineering building buried in the stratum, and it is a form of human using underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels and military tunnels.